EP0214806A2 - Tragbares Rundfunkgerät - Google Patents

Tragbares Rundfunkgerät Download PDF

Info

Publication number
EP0214806A2
EP0214806A2 EP86306575A EP86306575A EP0214806A2 EP 0214806 A2 EP0214806 A2 EP 0214806A2 EP 86306575 A EP86306575 A EP 86306575A EP 86306575 A EP86306575 A EP 86306575A EP 0214806 A2 EP0214806 A2 EP 0214806A2
Authority
EP
European Patent Office
Prior art keywords
antenna
housing
wideband
transceiver
receiver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86306575A
Other languages
English (en)
French (fr)
Other versions
EP0214806B1 (de
EP0214806A3 (en
Inventor
Kazuya Hashimoto
Hiroshi Asazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Publication of EP0214806A2 publication Critical patent/EP0214806A2/de
Publication of EP0214806A3 publication Critical patent/EP0214806A3/en
Application granted granted Critical
Publication of EP0214806B1 publication Critical patent/EP0214806B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole

Definitions

  • This invention relates to portable radios, and more particularly to portable receivers and transceivers utilizing diversity reception.
  • the single antenna typically is a sleeve antenna, whip antenna, or microstrip antenna dimensioned to have the necessary antenna bandwidth.
  • a portable transceiver has a separate microstrip antenna connected to a first radio receiver.
  • a wideband sleeve or whip antenna is connected to an associated duplexer. Both a second radio receiver and a transmitter are connected to the wideband antenna, via the duplexer.
  • the square microstrip antenna is formed of a conductive emission or radiating plate and a conductive ground plate joined by a conductive connector plate.
  • a housing enclosing the transceiver has an earphone.
  • a microphone is set in its front side, the microstrip antenna under its back side.
  • the wideband sleeve or whip antenna is mounted upright on its top side.
  • a vertical half-wave sleeve antenna F ig. 2A
  • a vertical quarter-wave whip antenna Fig. 2B
  • a square microstrip antenna Fig. 2C
  • a dual antenna diversity transceiver could be constructed using two antennas of the same type, as shown in Figs. 3A, 3B, and 3C.
  • the diversity transceiver of Fig. 3A is furnished with twin sleeve antennas
  • the transceiver of Fig. 3B is furnished with twin whip antennas.
  • twin sleeve antennas because the two similar antenna poles are disposed very close together, their mutual coupling is strong, so that they affect each other's characteristics, such as impedance, directionality, and radiation pattern, which causes design complications.
  • a clumsy construction is not esthetically pleasing.
  • the diversity transceiver of Fig. 3C is furnished with two microstrip antennas.
  • the antennas do not protrude from the receiver's housing, which improves the unit's portability and ease of use.
  • the interior space occupied by the antenna section is increased, reducing the space available for such things as the battery and electrical circuits. Therefore, this design is also inconvenient to use in practice.
  • this type of square microstrip antenna is formed from a conductive emission or radiating plate 14 , a conductive ground plate 16, and a conductive connector plate 18 which connects together the emission and ground plates.
  • This antenna has a thickness D and width W.
  • Fig. 4B shows generally how the antenna bandwith depends upon these two dimensions. To increase the antenna bandwidth, it is necessary to expand the strip antenna's size, either the thickness D or width W.
  • Fig. 3C it follows that if the construction of Fig. 3C is tried for a portable transceiver used in a wideband system, the strip antennas will end up rather large, which makes it difficult to actually employ such a design. Moreover, two strip antennas disposed as shown in Fig. 3C inconveniently affect each other's characteristics, such as impedance, directionality, and radiation pattern, because their mutual coupling is strong.
  • the present invention provides a portable radio unit having a dual antenna system for diversity reception that overcomes these problems without sacrificing ruggedness, ease of use, and pleasing appearance. More particularly, the invention provides an improved dual antenna radio unit especially useful in a portable transceiver.
  • FIG. 1A is a perspective view of an inventive transceiver
  • Figure 1B shows a functional block diagram of the embodiment of Fig. 1A.
  • the transceiver has two antennas, a square microstrip antenna 1 protected by an antenna cover 6, and a sleeve antenna 2 protruding above a top side of housing 3. Facing the user are an earphone 4 and a microphone 5.
  • the transceiver in addition to antennas 1 and 2 , the transceiver includes a first receiver 8 that receives signals picked up by microstrip antenna 1.
  • a transmitter 7 and a second receiver 9 make common use of the sleeve antenna 2 by means of a duplexer 10. Therefore, sleeve antenna 2 is used in common for both transmission and reception of signals, whereas square strip antenna 1 is exclusively used as a receiving antenna.
  • a transceiver system accommodates simultaneous transmission and reception of signals, as generally shown in Fig. 5, the sending frequency band between f 1 and f 2 is separated from the receiving frequency band between f 3 and f 4 by a frequency interval f 2 to f 3 . Therefore, when the same antenna is used for both transmission and reception, it generally needs to be a wideband antenna having a voltage standing wave ratio (VSWR) for frequencies in the total band between f 1 and f 41 which is prescribed amount or less.
  • VSWR voltage standing wave ratio
  • an antenna used for receiving alone only needs to cover the receiving frequency band f 3 - f 4 , so it can be a relatively narrow band antenna.
  • a sleeve antenna that can easily perform over a comparatively wide frequency band is used for the sending-receiving antenna 2 and a square microstrip antenna that can be of compact construction is used for the relatively narrow band receiving-only antenna 1.
  • the inventive transceiver has the projecting sleeve antenna 2 mounted on the top side of the housing 3 where it is less likely to be accidentally struck by the user during communications. Similarly, the square microstrip antenna 1 is kept out of the user's way by mounting it in the back, side opposite the earphone 4 and microphone 5, in the upper portion of the housing where it is unlikely to be covered by the user's hand when the transceiver is held.
  • the mutual coupling between the two inventive antennas is exceptionally small. Therefore, they have little effect on each other's characteristics, which simplifies the transceiver design.
  • the embodiment of the invention has been described as using a wideband sleeve antenna together with a narrow band square microstrip antenna.
  • whip antennas also can be easily adapted for sufficient wideband use
  • the invention also includes embodiments where a whip antenna is used instead of a sleeve antenna.
  • a microstrip antenna is used as a narrow band receiving-only antenna.
  • a sleeve antenna or a whip antenna is used as a wideband common use sending-receiving antenna.
  • the invention provides a diversity transceiver that is compact, portable, and easy to use and hold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Transceivers (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Mobile Radio Communication Systems (AREA)
EP86306575A 1985-08-29 1986-08-26 Tragbares Rundfunkgerät Expired - Lifetime EP0214806B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60190547A JP2702109B2 (ja) 1985-08-29 1985-08-29 携帯無線機
JP190547/85 1985-08-29

Publications (3)

Publication Number Publication Date
EP0214806A2 true EP0214806A2 (de) 1987-03-18
EP0214806A3 EP0214806A3 (en) 1989-01-18
EP0214806B1 EP0214806B1 (de) 1993-12-29

Family

ID=16259892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86306575A Expired - Lifetime EP0214806B1 (de) 1985-08-29 1986-08-26 Tragbares Rundfunkgerät

Country Status (6)

Country Link
US (1) US4829591A (de)
EP (1) EP0214806B1 (de)
JP (1) JP2702109B2 (de)
AU (1) AU598743B2 (de)
CA (1) CA1262562A (de)
DE (1) DE3689455T2 (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259129A3 (en) * 1986-08-30 1989-06-07 Nec Corporation Portable radio communication apparatus having diversity reception function
EP0516485A3 (en) * 1991-05-31 1993-03-03 Nec Corporation Radio pager
DE4140741A1 (de) * 1991-12-11 1993-06-17 Flachglas Ag Verfahren zum betrieb einer mobilfunkanlage eines fahrzeuges, insbesondere eines kraftfahrzeuges
EP0588271A1 (de) * 1992-09-18 1994-03-23 ALCATEL ITALIA S.p.A. Tragbares Funkgerät mit geringer Einstrahlung zum Benutzer mit einem asymmetrischen Antennenstrahlungsdiagramm
EP0588365A1 (de) * 1992-09-18 1994-03-23 ALCATEL ITALIA S.p.A. Tragbares Funkgerät, insbesondere Funktelefon, mit geringer Einstrahlung zum Benutzer
EP0622864A1 (de) * 1993-04-28 1994-11-02 Casio Computer Co., Ltd. Antennenvorrichtung zur Erzeugung gewünschter Strahlungsdiagramme ohne Veränderung der Antennenstruktur
WO1994028595A1 (en) * 1993-05-27 1994-12-08 Griffith University Antennas for use in portable communications devices
WO1995002287A1 (de) * 1993-07-09 1995-01-19 Ant Nachrichtentechnik Gmbh Mobilfunkantennenanlage
EP0648023A1 (de) * 1993-10-12 1995-04-12 Murata Manufacturing Co., Ltd. Tragbares Funkgerät mit Diversityempfänger
EP0652645A1 (de) * 1993-10-09 1995-05-10 Philips Patentverwaltung GmbH Funkgerät mit einer Antenne
AU679992B2 (en) * 1993-05-27 1997-07-17 Griffith University Antennas for use in portable communications devices
WO1998001919A3 (en) * 1996-07-05 1998-03-05 Dancall Telecom As A handheld apparatus having antenna means for emitting a radio signal, a holder therefor, and a method of transferring signals between said apparatus and holder
RU2137266C1 (ru) * 1994-03-08 1999-09-10 Хагенук Телеком ГмбХ Карманное передающее и/или приемное устройство
US6204817B1 (en) 1998-09-28 2001-03-20 Allgon Ab Radio communication device and an antenna system
US6288682B1 (en) 1996-03-14 2001-09-11 Griffith University Directional antenna assembly
US6690336B1 (en) 1998-06-16 2004-02-10 Symmetricom, Inc. Antenna
WO2010014988A1 (en) * 2008-08-01 2010-02-04 Qualcomm Incorporated Full-duplex wireless transceiver design

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01137642U (de) * 1988-03-15 1989-09-20
JPH01317001A (ja) * 1988-06-17 1989-12-21 Mitsubishi Electric Corp アンテナ切替装置
JPH02126702A (ja) * 1988-11-07 1990-05-15 Kokusai Electric Co Ltd 携帯用無線受信機
US5708833A (en) * 1993-04-27 1998-01-13 Norand Corporation Antenna cap, antenna connectors and telephone line connectors for computer devices utilizing radio and modem cards
US5261121A (en) * 1989-08-11 1993-11-09 Nec Corporation Portable radio transceiver system having improved adaptor and/or improved receiver signal control arrangement
US5255001A (en) * 1989-08-29 1993-10-19 Nec Corporation Antenna system for portable radio apparatus
JPH03228407A (ja) * 1989-12-11 1991-10-09 Nec Corp アンテナおよび該アンテナを用いた携帯用無線機
GB9025007D0 (en) * 1990-11-16 1991-01-02 Orbitel Mobile Communications Mobile radio telephone
GB2257838B (en) * 1991-07-13 1995-06-14 Technophone Ltd Retractable antenna
JPH05259725A (ja) * 1992-03-16 1993-10-08 Sharp Corp 携帯無線機用ダイバーシチアンテナ
US5841402A (en) * 1992-03-27 1998-11-24 Norand Corporation Antenna means for hand-held radio devices
US5644785A (en) * 1992-06-26 1997-07-01 Garrett; Brent A. Golf strap radio carrier
JP3457351B2 (ja) * 1992-09-30 2003-10-14 株式会社東芝 携帯無線装置
US5410749A (en) * 1992-12-09 1995-04-25 Motorola, Inc. Radio communication device having a microstrip antenna with integral receiver systems
US5317247A (en) * 1993-04-19 1994-05-31 Motorola, Inc. Integrated battery contact and retentive protrusion
US7119750B2 (en) * 1993-04-27 2006-10-10 Broadcom Corporation Radio transceiver card communicating in a plurality of frequency bands
WO1996038879A1 (en) * 1995-06-02 1996-12-05 Ericsson Inc. Printed monopole antenna
US5903821A (en) * 1995-07-13 1999-05-11 Sony Corporation Portable telephone with microstrip antennas
US7019695B2 (en) * 1997-11-07 2006-03-28 Nathan Cohen Fractal antenna ground counterpoise, ground planes, and loading elements and microstrip patch antennas with fractal structure
US6452553B1 (en) * 1995-08-09 2002-09-17 Fractal Antenna Systems, Inc. Fractal antennas and fractal resonators
JP3382764B2 (ja) * 1995-10-27 2003-03-04 松下電器産業株式会社 無線移動機
JP3030360B2 (ja) * 1995-12-01 2000-04-10 日本電気株式会社 携帯無線機用平板アンテナ
IL116423A0 (en) * 1995-12-15 1996-03-31 Geotek Communication Inc A portable radio terminal having diversity reception antennas
US6490435B1 (en) 1996-01-16 2002-12-03 Ericsson Inc. Flip cover and antenna assembly for a portable phone
US6430400B1 (en) 1996-01-16 2002-08-06 Ericsson Inc. Detachable flip cover assembly for a portable phone
US5918189A (en) * 1996-09-30 1999-06-29 Nokia Mobile Phones, Ltd. Exchangeable hardware module for radiotelephone
JPH10150312A (ja) * 1996-11-18 1998-06-02 Nec Shizuoka Ltd 無線携帯端末のアンテナ
US6097974A (en) * 1997-12-12 2000-08-01 Ericsson Inc. Combined GPS and wide bandwidth radiotelephone terminals and methods
KR20010023541A (ko) * 1998-07-02 2001-03-26 마츠시타 덴끼 산교 가부시키가이샤 안테나장치 및 통신기 시스템, 디지털 텔레비전방송수신장치
GB9923511D0 (en) * 1999-10-05 1999-12-08 Koninkl Philips Electronics Nv Personal communications apparatus
JP2001102954A (ja) * 1999-09-30 2001-04-13 Toshiba Corp 移動体通信端末
JP3527451B2 (ja) * 2000-01-11 2004-05-17 松下電器産業株式会社 アンテナ装置
WO2001076009A1 (en) * 2000-03-31 2001-10-11 Matsushita Electric Industrial Co., Ltd. Portable telephone apparatus and control method thereof
RU2206944C2 (ru) * 2001-06-13 2003-06-20 Самарский отраслевой научно-исследовательский институт радио Низкопрофильная антенна
USD549223S1 (en) * 2005-09-08 2007-08-21 Pirelli & C. S.P.A. Telecommunication apparatus
US20080026803A1 (en) * 2006-07-28 2008-01-31 Sony Ericsson Mobile Communications Ab Detachable Housings for a Wireless Communication Device
EP2109230A1 (de) * 2008-04-07 2009-10-14 Laird Technologies AB Antennenvorrichtung mit Empfangsdiversität und tragbare Funkkommunikationsvorrichtung damit

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087117A (en) * 1959-08-03 1963-04-23 Motorola Inc Portable transmitter apparatus with selective, diverse antenna means
US3277374A (en) * 1962-09-24 1966-10-04 Masatoshi Shimada Combined transceiver and radio broadcast receiver
US3887872A (en) * 1973-12-05 1975-06-03 Bendix Corp Freeze circuit for aircraft radio navigation systems
JPS5542790B2 (de) * 1975-01-09 1980-11-01
US4060766A (en) * 1976-05-07 1977-11-29 Nissan Denshi Company Limited Automatic signal switching apparatus for a combined transceiver and radio or tape recorder set
US4178548A (en) * 1976-10-04 1979-12-11 Geraldine E. Thompson Voice actuated mobile radio
US4083046A (en) * 1976-11-10 1978-04-04 The United States Of America As Represented By The Secretary Of The Navy Electric monomicrostrip dipole antennas
DE2651954C3 (de) * 1976-11-13 1980-12-11 Gorenje Koerting Electronic Gmbh & Co, 8217 Grassau Schaltungsanordnung für einen organisch in ein Rundfunk-Gerät integrierten CB-Empfänger mit Ruftonsteuerung und Stand-By-Schaltung
US4313119A (en) * 1980-04-18 1982-01-26 Motorola, Inc. Dual mode transceiver antenna
HU182355B (en) * 1981-07-10 1983-12-28 Budapesti Radiotechnikai Gyar Aerial array for handy radio transceiver
SE453702B (sv) * 1981-09-07 1988-02-22 Nippon Telegraph & Telephone Mikrostripantenn for ett riktningsdiversitetskommunikationssystem
JPS5977724A (ja) * 1982-10-26 1984-05-04 Nippon Telegr & Teleph Corp <Ntt> 携帯無線機
US4545071A (en) * 1982-11-12 1985-10-01 Motorola, Inc. Portable radio for a zoned data communications system communicating message signals between portable radios and a host computer
JPS59181732A (ja) * 1983-03-31 1984-10-16 Toshiba Corp 携帯用無線機におけるダイバ−シチ−受信方式
US4524461A (en) * 1983-07-18 1985-06-18 American Transceiver Corp. Helmet-supported radio transceiver and broadcast receiver system
JPS6047502A (ja) * 1983-08-26 1985-03-14 Nippon Telegr & Teleph Corp <Ntt> 携帯形ダイバ−シチ無線機
JPS6048626A (ja) * 1983-08-29 1985-03-16 Nippon Telegr & Teleph Corp <Ntt> 携帯無線機
JPS60100841A (ja) * 1983-11-07 1985-06-04 Nippon Telegr & Teleph Corp <Ntt> ２プランチダイバ−シチ受信携帯無線機
JPS6187434A (ja) * 1984-10-04 1986-05-02 Nec Corp 携帯無線機
IT1186842B (it) * 1985-03-12 1987-12-16 Francesco Buzzi Complesso trasmettitore e ricevitori multipli per comunicazioni a vista
JPH0647502A (ja) * 1992-07-31 1994-02-22 Kawasaki Steel Corp 高Ｃｒ−Ａｌ鋼急冷薄帯の製造方法

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259129A3 (en) * 1986-08-30 1989-06-07 Nec Corporation Portable radio communication apparatus having diversity reception function
EP0516485A3 (en) * 1991-05-31 1993-03-03 Nec Corporation Radio pager
DE4140741A1 (de) * 1991-12-11 1993-06-17 Flachglas Ag Verfahren zum betrieb einer mobilfunkanlage eines fahrzeuges, insbesondere eines kraftfahrzeuges
EP0588271A1 (de) * 1992-09-18 1994-03-23 ALCATEL ITALIA S.p.A. Tragbares Funkgerät mit geringer Einstrahlung zum Benutzer mit einem asymmetrischen Antennenstrahlungsdiagramm
EP0588365A1 (de) * 1992-09-18 1994-03-23 ALCATEL ITALIA S.p.A. Tragbares Funkgerät, insbesondere Funktelefon, mit geringer Einstrahlung zum Benutzer
EP0622864A1 (de) * 1993-04-28 1994-11-02 Casio Computer Co., Ltd. Antennenvorrichtung zur Erzeugung gewünschter Strahlungsdiagramme ohne Veränderung der Antennenstruktur
US5977917A (en) * 1993-04-28 1999-11-02 Casio Computer Co., Ltd. Antenna apparatus capable of producing desirable antenna radiation patterns without modifying antenna structure
WO1994028595A1 (en) * 1993-05-27 1994-12-08 Griffith University Antennas for use in portable communications devices
US6034638A (en) * 1993-05-27 2000-03-07 Griffith University Antennas for use in portable communications devices
AU679992B2 (en) * 1993-05-27 1997-07-17 Griffith University Antennas for use in portable communications devices
WO1995002287A1 (de) * 1993-07-09 1995-01-19 Ant Nachrichtentechnik Gmbh Mobilfunkantennenanlage
AU676331B2 (en) * 1993-07-09 1997-03-06 Bosch Telecom Gmbh Mobile radio aerial installation
US5842117A (en) * 1993-07-09 1998-11-24 Ant Nachrichtentechnick Gmbh Mobile radio aerial installation
EP0652645A1 (de) * 1993-10-09 1995-05-10 Philips Patentverwaltung GmbH Funkgerät mit einer Antenne
US5530919A (en) * 1993-10-12 1996-06-25 Murata Manufacturing Co., Ltd. Mobile communicator with means for attenuating transmitted output toward the user
EP0648023A1 (de) * 1993-10-12 1995-04-12 Murata Manufacturing Co., Ltd. Tragbares Funkgerät mit Diversityempfänger
RU2137266C1 (ru) * 1994-03-08 1999-09-10 Хагенук Телеком ГмбХ Карманное передающее и/или приемное устройство
US6288682B1 (en) 1996-03-14 2001-09-11 Griffith University Directional antenna assembly
WO1998001919A3 (en) * 1996-07-05 1998-03-05 Dancall Telecom As A handheld apparatus having antenna means for emitting a radio signal, a holder therefor, and a method of transferring signals between said apparatus and holder
US6690336B1 (en) 1998-06-16 2004-02-10 Symmetricom, Inc. Antenna
US6204817B1 (en) 1998-09-28 2001-03-20 Allgon Ab Radio communication device and an antenna system
WO2010014988A1 (en) * 2008-08-01 2010-02-04 Qualcomm Incorporated Full-duplex wireless transceiver design

Also Published As

Publication number Publication date
EP0214806B1 (de) 1993-12-29
CA1262562A (en) 1989-10-31
AU598743B2 (en) 1990-07-05
DE3689455D1 (de) 1994-02-10
US4829591A (en) 1989-05-09
JPS6249729A (ja) 1987-03-04
DE3689455T2 (de) 1994-07-14
JP2702109B2 (ja) 1998-01-21
AU6183786A (en) 1987-03-05
EP0214806A3 (en) 1989-01-18

Similar Documents

Publication Publication Date Title
US4829591A (en) Portable radio
US5945954A (en) Antenna assembly for telecommunication devices
US5561437A (en) Two position fold-over dipole antenna
US5446789A (en) Electronic device having antenna for receiving soundwaves
JP2764348B2 (ja) 携帯装置用アンテナ装置
US5551069A (en) Radio apparatus having a combined antenna and clip
EP0165264A1 (de) Sende- und empfangsantenne für zwei frequenzbänder
IE69268B1 (en) Improved extendible antenna for portable cellular telephones
US6646619B2 (en) Broadband antenna assembly of matching circuitry and ground plane conductive radiating element
JPH06204908A (ja) 無線機用アンテナ
US6753818B2 (en) Concealed antenna for mobile communication device
JPS6048626A (ja) 携帯無線機
GB2293274A (en) Multi-position patch antenna and method therefor
JPH08288895A (ja) 携帯型通信機
JPH01295505A (ja) アンテナ装置
JPH04252523A (ja) 移動無線機
US20040125018A1 (en) Multiband compressed antenna in a volume
JPH066585Y2 (ja) 小型アンテナ
JPS63303523A (ja) 携帯用通信装置
JP3043110B2 (ja) 無線電話器
JPS62234404A (ja) 無線機用アンテナ
JPH06314984A (ja) 移動体通信装置
JPS6234408A (ja) 無線機用アンテナ
JPS6234406A (ja) 無線機用アンテナ
JPH05235628A (ja) ホイップアンテナ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19860829

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB NL SE

17Q First examination report despatched

Effective date: 19910107

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19931229

Ref country code: NL

Effective date: 19931229

Ref country code: SE

Effective date: 19931229

REF Corresponds to:

Ref document number: 3689455

Country of ref document: DE

Date of ref document: 19940210

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050818

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050824

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20060825

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20